x86: expose CONFIG_HVM

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig
index ae1b707c198843d4d78a1ca053713443fd4110af..548cbf990e41195ce257abfc0102b9526cc5ff1c 100644 (file)
--- a/xen/arch/x86/Kconfig
+++ b/xen/arch/x86/Kconfig
@@ -59,7 +59,17 @@ config PV_LINEAR_PT
          If unsure, say Y.
 
 config HVM
-       def_bool y
+       def_bool !PV_SHIM_EXCLUSIVE
+       prompt "HVM support"
+       ---help---
+         Interfaces to support HVM guests which require hardware
+         support like Intel's VT-x or AMD's SVM. Note the hypervisor
+         doesn't distinguish HVM or PVH guest types. PVH guest type
+         is only a concept for end users.
+
+         This option is needed if you want to run HVM or PVH guests.
+
+         If unsure, say Y.
 
 config SHADOW_PAGING
         bool "Shadow Paging"